1. The problem statement, all variables and given/known data The acceleration of a bus is given by , a(t) = xa where x = 1.24 m/s3 is a constant. If the bus's velocity at time t1 = 1.15s is 4.94 m/s, what is its velocity at time t2 = 2.10s ? 2. Relevant equations I know I have to integrate somehow, but the only equation I can think of to apply is v(t) = v (initial) + integral of [a dt] with boundaries t and 0. 3. The attempt at a solution I tried using the basic equations of motion, but they all assume that acceleration is constant... then I tried the above equation but I'm having trouble finding the intial velocity. Please help!!!